Lead free piezoelectric ceramics for medical ultrasound transducers

Kevin A. Snook, Shujun Zhang, Thomas R. Shrout

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The potential of eliminating lead-based materials is gaining momentum in Europe, resulting in a search to replace PZT ceramics with comparable alternatives. Compositions based on the KNN and BNBK families have been reported to possess properties near PZT, and a comparison of the properties is given. Single element transducers operating at 5 MHz have been modeled and made using both compositions and PZT-5H. Bandwidths of nearly 40% were obtained for all transducers with single matching layers, and pulse-echo amplitudes were within 3 dB. Subsequent modeling of an array element shows a larger difference between PZT and the lead-free materials due to the lower clamped permittivity and k 33' of those materials. Multilayer lead-free arrays could improve system efficiency though in the short term replacement could be more easily achieved in high frequency single element devices.

Original languageEnglish (US)
Title of host publication2006 IEEE International Ultrasonics Symposium, IUS
Pages351-354
Number of pages4
DOIs
StatePublished - Dec 1 2006
Event2006 IEEE International Ultrasonics Symposium, IUS - Vancouver, BC, Canada
Duration: Oct 3 2006Oct 6 2006

Publication series

NameProceedings - IEEE Ultrasonics Symposium
Volume1
ISSN (Print)1051-0117

Other

Other2006 IEEE International Ultrasonics Symposium, IUS
CountryCanada
CityVancouver, BC
Period10/3/0610/6/06

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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